trait_derive is a small crate that will generate a trait based on the impl blocks of your structs. This will save repitition in cases where you want to generate a trait for testing purposes, or you want to turn exsisting code into a trait for decoupling purposes.

To add it to your project, add the following line to your Cargo.toml

trait_derive = "0.1.0"

Currently, traitderive requires you to be running _nightly Rust. This will hopefully change in the future, once proc macros are stable.

Examples

Using this crate looks something like this: ``` rust

![feature(proc_macro)]

extern crate trait_derive;

use traitderive::maketrait;

pub struct A;

[make_trait] // This will generate a trait named 'TraitA' by default.

impl A { pub fn hello_world(&self) { println!("Hello, world!"); } }

fn takestrait(x: &TraitA) { x.helloworld(); }

fn basicusage() { let a = A { }; takestrait(&a); }

[make_trait(Database)] // This will generate a trait named 'Database'

impl A { pub fn query(&self) -> u32 { 32 } } ```